EP0164015A1 - Montage pour des centraux de télécommunication à commande centrale, en particulier des centraux téléphoniques, avec deux unités de commande centrale fonctionnant en parallèle et circuit de remplacement en cas de dérangement - Google Patents

Montage pour des centraux de télécommunication à commande centrale, en particulier des centraux téléphoniques, avec deux unités de commande centrale fonctionnant en parallèle et circuit de remplacement en cas de dérangement Download PDF

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Publication number
EP0164015A1
EP0164015A1 EP85106227A EP85106227A EP0164015A1 EP 0164015 A1 EP0164015 A1 EP 0164015A1 EP 85106227 A EP85106227 A EP 85106227A EP 85106227 A EP85106227 A EP 85106227A EP 0164015 A1 EP0164015 A1 EP 0164015A1
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EP
European Patent Office
Prior art keywords
control unit
central control
group
central
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85106227A
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German (de)
English (en)
Other versions
EP0164015B1 (fr
Inventor
Manfred Eher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT85106227T priority Critical patent/ATE49690T1/de
Publication of EP0164015A1 publication Critical patent/EP0164015A1/fr
Application granted granted Critical
Publication of EP0164015B1 publication Critical patent/EP0164015B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2035—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant without idle spare hardware
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2002—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant
    • G06F11/2007—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant using redundant communication media
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2015—Redundant power supplies
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored program
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored program using multi-processor systems
    • H04Q3/5455—Multi-processor, parallelism, distributed systems

Definitions

  • the invention relates to a circuit arrangement for centrally controlled telecommunication exchanges, in particular telephone exchange systems, ntral torturewerken with two parallel working Z e and two groups of sub-central switching devices, and with two in each case a central control unit with the sub-central switching devices of a group connecting bidirectional data bus, and two, the sub-central switching devices each having a group with the bidirectional data bus auxiliary lines connecting the central control unit assigned to the other group of sub-central switching devices, and with parallel operation of both central control units in data exchange with the sub-central switching devices of the group assigned to them in each case via the relevant bidirectional data bus line and with the equivalent switching operation provided in each case when a central control unit or its assigned data bus line is interrupted
  • Auxiliary bus line by runs to the other central control unit to the sub-central switching units of the group of the central control unit affected by the business interruption, and with bidirectional bus amplifiers looped into the data bus auxiliary lines, two of which are each connected to a data bus auxiliary line running from a central control unit to the
  • a central control unit works with the switching devices of the group assigned to it in fault-free operation.
  • the central control unit and the switching devices of the group assigned to it are also grouped together in such a way that they form a unit, for example by being accommodated in a frame.
  • the switching devices mentioned can be dependent partial central control devices, partial memories End circuits of data links and the like act.
  • a bus amplifier is required depending on the respective spatial extent over which a data bus line extends from a central control unit to the switching devices in its group.
  • Such bus amplifiers are generally bidirectional because data transmission must be carried out both from a central control unit to each of the switching devices and in the opposite direction. Such bus amplifiers are mainly required for equivalent switching operation.
  • the data bus auxiliary lines provided for this have a greater spatial length than the data bus lines, and therefore bus amplifiers are mainly used in these data bus auxiliary lines.
  • the bus amplifiers not only have the task of amplifying (if necessary also equalizing) the signals to be transmitted, but also of coupling and decoupling.
  • the undisturbed central control unit representing the faulty central control unit must be able to work together with the group of switching devices associated with the faulty central control unit. Therefore, the relevant data bus auxiliary line for the replacement -.-. switching operation can be coupled to the undisturbed central control unit, in particular to its data bus line. At the end of the equivalent switching operation, this data bus auxiliary line must be uncoupled again accordingly, so that the trouble-free parallel operation of both Central control units can be continued.
  • a central control unit together with the switching devices of its group is affected by a failure of the operating voltage. If a central control unit has a common power supply with the switching devices of its group, and if this fails, not only is this central control unit out of operation, but also the switching devices of the group assigned to it. In such a case of failure to have e r set circuit is unnecessary, because in addition to the relevant central control unit and its associated switching devices are not operational. In a circuit arrangement of the type specified at the outset, such a fault poses the problem of decoupling the data bus auxiliary line, which leads to the switching devices of the group which is also affected by the power failure.
  • the invention solves this problem in that the first bus amplifier of one group - or the other group - of central switching devices a common power supply with the central control unit of this group - or the other group - and the second bus amplifier a common power supply with each has another central control unit, and that each of the bus amplifiers connected to a central control unit is connected via a signal line to the other central control unit, via which, in the event of a power failure, a central control unit and the group of sub-central switching devices assigned to it, as well as the bus amplifier connected to it, provide a switch-off signal the bus amplifier connected in series with this and connected to the respective other central control unit is given, by means of which an effective interruption in the bus amplifier with no voltage supply takes place in this bus amplifier is implemented in the data bus auxiliary line.
  • a data bus auxiliary line runs from the sub-central switching devices in each case to a group from the central control unit assigned to the other group of sub-central switching devices.
  • a corresponding representation can be found in the present drawing.
  • Two central control units R1 and R2 are provided. Groups of partially central switching devices A1 to An and B1 to Bn are also provided.
  • a central control unit, for example R1 is connected to the part-central switching devices of the group assigned to it, for example A1 to An, via the data bus line C1. The same applies to the other central control unit and the other group of partially central switching devices.
  • the data bus originating from each of the two central control units branches to a data bus line, for example C1 and a data bus auxiliary line, for example C12.
  • the data bus auxiliary line connects a central control unit, for example R1, to the partial central switching devices, for example B1 to Bn, which are assigned to the other central control unit, for example R2.
  • the two central control units work in parallel. Each of them is in data exchange with the sub-central switching devices of the group assigned to it via the relevant bidirectional data bus line.
  • the data exchange on one side is independent of the data exchange on the other side and vice versa.
  • a central control unit is interrupted, e.g. R2 or its associated data bus line, e.g. C2 in a known manner, finds an equivalent switching operation via the relevant data bus auxiliary line, e.g. C12 instead.
  • This equivalent switching operation is under the control influence of the other central control unit, e.g. R1.
  • auxiliary lines e.g. C12 are bidirectional Bus amplifiers looped in, which are labeled "BEU” in Figure 1 on page 34 of the magazine mentioned and are called “bus expansion unit” there.
  • Two bus amplifiers for example W1, V2 are connected to a data bus auxiliary line, for example C12, running from a central control unit, for example R1 to the sub-central switching devices, for example B1 to Bn, of the other group.
  • a first, for example V2 is connected to the part-central switching devices, for example B1 to Bn, in each case one group and a second to the central control unit, for example R1, in each case for the other group of part-central switching devices (A1 to An).
  • each group of sub-central switching devices e.g. A1 to An, together with their central control unit, e.g. R1, one common power supply device, e.g. Assigned to S1.
  • a central control unit is therefore fed together with the sub-central switching devices of its group by its own power supply device.
  • the first bus amplifier for example V1 which has a group of sub-central switching devices, for example A1 to An, has a common power supply with the central control unit, for example R1, of this group.
  • the relevant power supply line is also in the drawing designated "s1".
  • This power supply device S1 and this power supply line s1 also serve to supply the sub-central switching devices of this group.
  • the other bus amplifier for the data bus auxiliary line C21 of one group of sub-central switching devices, for example A1 to An is the bus amplifier W2. He lies with the first one Bus amplifier V1 in series.
  • the second bus amplifier W2 of the data bus auxiliary line C21 has a common power supply with the other central control unit R2 and with the partially central switching devices, for example B1 to Bn of this group.
  • the power supply device S2 is connected via the power supply line s2 to the central control unit R2, to the part-central switching devices B1 to Bn and to the second bus amplifier of the data bus auxiliary line C21 via the power supply line s2.
  • the central control unit R2 the sub-central switching devices B1 to Bn and the bus amplifiers V2 and W2 are affected by an interruption in the voltage supply by the power supply device S2.
  • the bus amplifier V2 also has no voltage supply.
  • the circuits contained in it are unable to assume unambiguous switching states due to a lack of proper supply with operating voltage.
  • the data bus auxiliary line C12 can remain fully or partially connected via the bus amplifier V2 to the part of this data bus auxiliary line which continues via this bus amplifier in the direction of the central control unit R1.
  • the bus amplifier W1 which connects this data bus auxiliary line to the branch on the data bus line C1, is connected to the central control unit R2 via a signal line w1.
  • the central control unit R2 If the central control unit R2 is now affected by the malfunction of a failure of the operating voltage, then a corresponding signal is emitted via the signal line w1 to the bus amplifier W1.
  • the central control R2 thus emits this signal in the event of a failure of the operating voltage and / or whenever it is not supplied with regard to the operating voltage, that is to say in the de-energized (in terms of operating voltage supply) idle state.
  • the bus amplifier W1 is not affected by this interruption in the supply of operating voltage (failure of the power supply device S2) because it receives the required operating voltage from the power supply device S1.
  • the bus amplifier W1 is therefore fully operational in the event of a fault.
  • the bus amplifier W1 disconnects the data bus auxiliary line between the branch on the data bus line C1 and the bus amplifier V2.
  • the bus amplifier W1 which continues to be fully operational by receiving the full operating voltage, therefore accomplishes a complete decoupling of the data bus auxiliary line C12 including the bus amplifier V2 from the data bus line C1 and the central control unit R1. This prevents any interference from the area of the central control unit R2 and the sub-central switching devices and bus amplifiers assigned to it affecting the data bus line C1 and, via this, the central control unit R1 and the sub-central switching devices assigned to it.
  • central control units and partially central switching devices are mentioned.
  • the degree of centralization the invention is by no means restricted to the fact that the central control units occupy the highest degree of centralization. Rather, the central control units can also be part-central processing devices and / or control devices, each of which works with switching devices of a lower degree of centralization assigned to them via a data bus line.
  • the invention is also not restricted to the intended use, but processing operations of any other type can be provided in addition to pronounced control processes.
  • the function of the bus amplifiers V1 and V2 should also be addressed. It is assumed that the Central control unit R2 is affected by an interruption in operation which does not also affect the group of sub-central switching devices B1 to Bn assigned to it. In this operating state, the central control unit R2 is therefore not ready for operation, but the sub-central switching devices B1 to Bn assigned to it remain ready for operation. In this operating state, the central control unit R2 emits a signal via the signal line v2 to the bus amplifier V2 and signals this to the fact that the operation in the central control unit R2 has been interrupted. On the basis of this signal, the bus amplifier V2 couples the data bus auxiliary line C12 to the bus amplifier W1.
  • the data bus auxiliary line C12 is then connected to the data bus line C1 and thus to the central control unit R1 via this.
  • the bus amplifier W1 establishes the connection between the data bus line C1 and the bus amplifier V2 solely on the basis of the operational readiness of the central control unit R1 or also on the basis of an additional signal on the part of the central control unit R2, which outputs this to the bus amplifier W1 due to its interruption in operation.
  • This signal which therefore requires coupling of the data bus auxiliary line C12 to the data bus line C1, can also be transmitted via the signal line w1.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Safety Devices In Control Systems (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Small-Scale Networks (AREA)
EP85106227A 1984-05-30 1985-05-21 Montage pour des centraux de télécommunication à commande centrale, en particulier des centraux téléphoniques, avec deux unités de commande centrale fonctionnant en parallèle et circuit de remplacement en cas de dérangement Expired - Lifetime EP0164015B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106227T ATE49690T1 (de) 1984-05-30 1985-05-21 Schaltungsanordnung fuer zentralgesteuerte fernmeldevermittlungsanlagen, insbesondere fernsprechvermittlungsanlagen, mit zwei parallel arbeitenden zentralsteuerwerken und ersatzschaltung im stoerungsfall.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3420281 1984-05-30
DE3420281 1984-05-30

Publications (2)

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EP0164015A1 true EP0164015A1 (fr) 1985-12-11
EP0164015B1 EP0164015B1 (fr) 1990-01-17

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EP85106227A Expired - Lifetime EP0164015B1 (fr) 1984-05-30 1985-05-21 Montage pour des centraux de télécommunication à commande centrale, en particulier des centraux téléphoniques, avec deux unités de commande centrale fonctionnant en parallèle et circuit de remplacement en cas de dérangement

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US (1) US4700381A (fr)
EP (1) EP0164015B1 (fr)
AT (1) ATE49690T1 (fr)
DE (1) DE3575511D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0288648A1 (fr) * 1987-04-22 1988-11-02 International Business Machines Corporation Commutateur de bus pour adaptateurs pour améliorer la disponibilité d'une unité de commande
EP0239127A3 (en) * 1986-03-27 1989-01-25 Tokyo Electric Co., Ltd. Automatic pos loop switching
AU768395B2 (en) * 1998-02-27 2003-12-11 Nec Corporation Large-scale integrated circuit(LSI), circuit for controlling electronic device including LSI, and method of controlling the circuit

Families Citing this family (13)

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DE3867902D1 (de) * 1987-05-22 1992-03-05 Siemens Ag Schaltungsanordnung fuer fernmeldevermittlungsanlagen, insbesondere pcm-zeitmultiplex-fernsprechvermittlungsanlagen, mit einem zentralkoppelfeld und mit an dasselbe angeschlossenen dezentralen teilkoppelfeldern.
US5546452A (en) * 1995-03-02 1996-08-13 Geotel Communications Corp. Communications system using a central controller to control at least one network and agent system
US5987115A (en) * 1996-12-03 1999-11-16 Northern Telecom Limited Systems and methods for servicing calls by service agents connected via standard telephone lines
US6122364A (en) * 1997-12-02 2000-09-19 Nortel Networks Corporation Internet network call center
US6115693A (en) * 1998-04-17 2000-09-05 Andersen Consulting Llp Quality center and method for a virtual sales and service center
US6064973A (en) * 1998-04-17 2000-05-16 Andersen Consulting Llp Context manager and method for a virtual sales and service center
US6070142A (en) * 1998-04-17 2000-05-30 Andersen Consulting Llp Virtual customer sales and service center and method
US6134530A (en) * 1998-04-17 2000-10-17 Andersen Consulting Llp Rule based routing system and method for a virtual sales and service center
US6807269B1 (en) 2000-07-20 2004-10-19 Cisco Technology, Inc. Call management implemented using call routing engine
US6801613B1 (en) * 2000-08-31 2004-10-05 Cisco Technology, Inc. Associating call appearance with data associated with call
US6674852B1 (en) 2000-08-31 2004-01-06 Cisco Technology, Inc. Call management implemented using call routing engine
US6690789B1 (en) 2000-08-31 2004-02-10 Cisco Technology, Inc. Fault tolerant telephony control
US10346271B2 (en) * 2015-12-28 2019-07-09 Quanta Computer Inc. Manage power supply units and modularized automatic transfer switches

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DE2727983A1 (de) * 1977-06-22 1979-01-11 Telefonbau & Normalzeit Gmbh Schaltungsanordnung mit gevielfachter steuerung, insbesondere fuer fernsprechvermittlungsanlagen

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239127A3 (en) * 1986-03-27 1989-01-25 Tokyo Electric Co., Ltd. Automatic pos loop switching
EP0288648A1 (fr) * 1987-04-22 1988-11-02 International Business Machines Corporation Commutateur de bus pour adaptateurs pour améliorer la disponibilité d'une unité de commande
AU768395B2 (en) * 1998-02-27 2003-12-11 Nec Corporation Large-scale integrated circuit(LSI), circuit for controlling electronic device including LSI, and method of controlling the circuit

Also Published As

Publication number Publication date
US4700381A (en) 1987-10-13
ATE49690T1 (de) 1990-02-15
DE3575511D1 (de) 1990-02-22
EP0164015B1 (fr) 1990-01-17

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